SN74LS377NSR

Flip Flops Overview

The SN74LS377NSR is an octal D-type flip-flop with clock enable, manufactured by Texas Instruments. It belongs to the LS logic series and features non-inverting TTL outputs in a 20-SOIC surface-mount package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum propagation delay of 27 ns at 5 V with 15 pF load. It provides a low-level output current of 8 mA and a high-level output current of -400 uA. The component functions as a positive-edge triggered storage element suitable for digital logic applications.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single integrated circuit.
• Clock enable functionality allows selective data latching based on the enable input state.
• Positive-edge triggering ensures data capture occurs specifically on the rising edge of the clock signal.
• Non-inverting TTL output structure maintains logical consistency between input and output states.

Flip Flops Applications

• Data storage and buffering in digital systems
• Register implementation for temporary data holding
• Counter circuits utilizing parallel data loading
• Logic control interfaces requiring synchronized state retention

Flip Flops Procurement Notes

Verify that the specific order matches the SN74LS377NSR suffix indicating the SOIC-20 surface-mount package variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations prior to integration. Ensure the procurement source provides valid traceability for the Texas Instruments manufacturing origin. Cross-reference the part number against current obsolescence notices to confirm active production status before finalizing acquisition plans.

Flip Flops Selection Notes

Select this component when an octal D-type flip-flop with clock enable is required in a surface-mount design. The LS series offers standard TTL compatibility with moderate speed performance. Consider the 20-SOIC package dimensions for PCB layout constraints. Evaluate the 27 ns propagation delay against system timing requirements. Verify that the 4.75 V to 5.25 V operating range aligns with the target power supply architecture.

Flip Flops Part Context

This device is part of the SN74LS377 family, which includes variants such as the through-hole SN74LS377N. The NSR suffix specifically denotes the reel-packaged surface-mount version. It serves as a fundamental building block in sequential logic circuits. The component complements other LS-series logic gates to form complex digital systems. Its design focuses on reliable data retention and controlled output activation.

Flip Flops Replacement Considerations

SN74LS377N (PDIP-20 through-hole equivalent)

Flip Flops FAQ

What triggers the data capture in the SN74LS377NSR?

Data is captured on the positive edge of the clock signal when the enable input is active.

How does the clock enable feature affect operation?

The enable input controls whether the flip-flops respond to the clock edge, allowing selective data storage.